312 Mr. E. J. Miers on Malaysian Crustacea. 



half times the length of the- upper orbital margin; and its 

 anterior margin is straight, not at all sinuateci in the middle. 

 I have observed, however, some variation in the width of the 

 front in this species. 



There is a second male, without definite locality, in the 

 collection, that agrees in every particular with the Celebes 

 example, except that on one side of the carapace there is a 

 distinct tooth behind the extraorbital tooth, and on the other 

 side an indication of a similar tooth, the margin of the cara- 

 pace being slightly sinuated. This variety appears to mark 

 a transition to Metopograpsus quadridentatus, Stimpson, and 

 M. oceanicus. 



From M. latifrons, White, this variety is distinguished 

 by the much less coarsely denticulated front and less accen- 

 tuated frontal lobes. 



Sesarma. 



* Lateral margins of the carapace without any tooth behind the 

 extraorbital tooth. 



Sesarma affinis, De Haan. 



Two specimens (males) are in the collection, without special 

 indication of locality. They agree with De Haan's figure in 

 having two minutely pectinated oblique ridges on the upper 

 surface of the hand, a character which, curiously enough, is 

 mentioned neither by De Haan nor by Mr. de Man in his 

 remarks upon this species (Notes Ley den Museum, ii. (v.) 

 p. 22, 1879). The tubercles of the upper mobile finger are 

 somewhat more numerous than in De Haan's type. 



Sesarma aspera of Heller, from Ceylon, Madras, and the 

 Nicobars, is either identical with or very nearly allied to this 

 species ; the sides of the carapace, however, are represented 

 as nearly parallel, not convergent distally. 



Sesarma granosimana, sp. n. 

 (PI. XIV. fig. 3.) 



Carapace nearly quadrate, with the surface punctulated, 

 but not granulated or rugose ; antero-lateral margins without 

 any tooth except the extraorbital tooth. The anterior margin 

 of the carapace is divided into four nearly equal and not very 

 prominent lobes ; the front, although nearly vertically de- 

 flexed, does not form a marked angle with the anterior margin 

 of the carapace ; it is about two thirds the width of the cara- 

 pace ; and its anterior margin is nearly straight, but slightly 

 reflexed on each side of the middle line. The anterior legs 

 (in the male) are short ; the arm has a very small tooth at 



